soc: xtensa: fix missing rodata section in intel_adsp
soc: xtensa: fix missing rodata section in intel_adsp

The common linker script for cavs_v?? was missing an include for the
snippets-rodata.ld file which is needed for any applications using the
`zephyr_linker_source(RODATA <linker_script>)` cmake function.

Signed-off-by: Yuval Peress <50dc11c009bd4d7e9d9d15a383c1743ce5ee82ef@google.com>

galak/zephyr,galak/zephyr,finikorg/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr,finikorg/zephyr,galak/zephyr,finikorg/zephyr,galak/zephyr,finikorg/zephyr,galak/zephyr,zephyrproject-rtos/zephyr